Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires nyholm/symfony-bundle-test 1.x-dev -> satisfiable by nyholm/symfony-bundle-test[1.x-dev]. - nyholm/symfony-bundle-test 1.x-dev requires symfony/dependency-injection ^4.3 || ^5.0 || ^6.0 -> found symfony/dependency-injection[v4.3.0, ..., v4.4.49, v5.0.0, ..., v5.4.34, v6.0.0, ..., v6.4.2] but these were not loaded, likely because it conflicts with another require. Problem 2 - symfony/webpack-encore-bundle v1.12.0 requires symfony/asset ^4.4 || ^5.0 -> found symfony/asset[v4.4.0, ..., v4.4.46, v5.0.0, ..., v5.4.31] but these were not loaded, likely because it conflicts with another require. - symfony/webpack-encore-bundle[v1.13.0, ..., v1.17.2] require symfony/asset ^4.4 || ^5.0 || ^6.0 -> found symfony/asset[v4.4.0, ..., v4.4.46, v5.0.0, ..., v5.4.31, v6.0.0, ..., v6.4.0] but these were not loaded, likely because it conflicts with another require. - Root composer.json requires symfony/webpack-encore-bundle ^1.12 -> satisfiable by symfony/webpack-encore-bundle[v1.12.0, ..., v1.17.2].